<!DOCTYPE html>
<html>

<head>
	<meta charset="utf-8" />
    <title>hehehehehe</title>
    <style>
    nav {
        margin: 100px auto;
        text-align: center;
        font-family: "Comic Sans MS";
        font-style: normal;
        font-size: 18px;
    }
    
    nav ul ul {
        display: none;
    }
    
    nav ul li:hover > ul {
        display: block;
    }
    
    nav ul {
        background: #efefef;
        background: linear-gradient(top, #efefef 0%, #bbbbbb 100%);
        background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%);
        background: -webkit-linear-gradient(top, #efefef 0%, #bbbbbb 100%);
        box-shadow: 0px 0px 9px rgba(0, 0, 0, 0.15);
        padding: 0 350px;
        border-radius: 10px;
        list-style: none;
        position: relative;
        display: inline-table;
    }
    
    nav ul:after {
        content: "";
        clear: both;
        display: block;
    }
    
    nav ul li {
        float: left;
    }
    
    nav ul li:hover a {
        color: #f22;
    }
    
    nav ul li a {
        display: block;
        padding: 25px 40px;
        color: #757575;
        text-decoration: none;
    }
    
    nav ul ul {
        /*background: #5f6975;*/
        border-radius: 3px;
        padding: 0;
        position: absolute;
        top: 100%;
    }
    
    nav ul ul li {
        float: none;
        border-radius: 10px;
        width: 180px;
        /*border-top: 1px solid ;
	        border-bottom: 1px solid #575f6a;
	        */
        position: relative;
    }
    
    nav ul ul li a {
        padding: 15px 40px;
        color: #000;
    }
    
    nav ul ul li a:hover {
        background: #bbb;
        border-radius: 5px;
    }
    
    nav ul ul ul {
        position: absolute;
        left: 100%;
        top: 0;
    }
    </style>
</head>

<body>
    <nav>
        <ul>
            <li><a href="#">首页</a></li>
            <li><a href="#">新闻</a>
                <ul>
                    <li><a href="#">Photoshop</a></li>
                    <li><a href="#">Illustrator</a></li>
                    <li><a href="#">Web Design</a>
                        <ul>
                            <li><a href="#">HTML</a></li>
                            <li><a href="#">CSS</a></li>
                        </ul>
                    </li>
                </ul>
            </li>
            <li><a href="#">Articles</a>
                <ul>
                    <li><a href="#">Web Design</a>
                        <ul>
                            <li><a href="#">Photoshop</a></li>
                            <li><a href="#">Illustrator</a>
                                <ul>
                                    <li><a href="#">Photoshop</a></li>
                                    <li><a href="#">Illustrator</a></li>
                                    <li><a href="#">Web Design</a>
                                        <ul>
                                            <li><a href="#">HTML</a></li>
                                            <li><a href="#">CSS</a></li>
                                        </ul>
                                    </li>
                                </ul>
                            </li>
                            <li><a href="#">Web Design</a>
                                <ul>
                                    <li><a href="#">HTML</a></li>
                                    <li><a href="#">CSS</a></li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                    <li><a href="#">User Experience</a></li>
                </ul>
            </li>
            <li><a href="#">Inspiration</a></li>
        </ul>
    </nav>


   
</body>

</html>
